Muscles

Question 1

Psoas Major 1,2,3

1. Origin
2. Insertion
3. Innervation
4. Action

Answer 1

1. Transverse process of lumbar vertebrae
2. Lesser Trochanter of the femur
3. Anterior Rami of L1, L2, L3
4. Flexes thigh @ hip joint

Question 2

Iliacus Muscle 2,3,4

1. Origin
2. Insertion
3. Innervation
4. Action

Answer 2

1. Superior 2/3 of iliac fossa
2. Lesser trochanter of the femur
3. Femoral Nerve L2, L3, L4
4. Flexes thigh @ hip join

Question 3

Quadratus Lumborum 12, 1, 2, 3, 4

1. Origin
2. Insertion
3. Innervation
4. Action

Answer 3

1. Medial 1/2 of the inferior border of rib 12
2. Internal lip of iliac crest
3. Anterior branches of T12, L1, L2, L3, L4
4. Lateral flexion and extension of the vertebral column